Subject: Re: shotpeening vs. heat treating Posted by: Robert on December 18, 2002 at 06:23:00: In Reply to: Re: shotpeening vs. heat treating posted by Bacon Boy on December 17, 2002 at 10:58:06:

Message: >>just out of curiosity, are shot peened parts, such as handlebars better than heat treated ones in terms of longevity? Thanks. >Shot peening is used to relieve stress after heat treating for increase in fatigue life. That is to say, all shot peened parts are heat treated. Shot peening can also be used to make a lightweight part last as long as a heavier part (in regards to fatigue life). Maybe, maybe not. While this is the preferred and better way to make a part, not all manufacturers will do this. And it also depends on the type and quality of the metal used, the thickness etc.. You can't give an absolute answer to a question like this without knowing the exact parts being compared and knowing either how they are made or having a large database of user results.